在site模块发现下面的代码：里面有同个条件执行语句块，条件是 if 0:  请问这种语句块有机会被执行么?
def setencoding():
    """Set the string encoding used by the Unicode implementation.  The
    default is 'ascii', but if you're willing to experiment, you can
    change this."""
    encoding = "utf-8" # Default value set by _PyUnicode_Init()
    if 0:
        # Enable to support locale aware default string encodings.
        import locale
        loc = locale.getdefaultlocale()
        if loc[1]:
            encoding = loc[1]
    if 0:
        # Enable to switch off string to Unicode coercion and implicit
        # Unicode to string conversion.
        encoding = "undefined"
    if encoding != "ascii":
        # On Non-Unicode builds this will raise an AttributeError...
        sys.setdefaultencoding(encoding) # Needs Python Unicode build !

--

开飞机的舒克
http://www.lvye.org/shuke
msn:weizhong at netease.com
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if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
整段代码注释掉要方便且清楚。

魏忠 wrote:
> 在site模块发现下面的代码：里面有同个条件执行语句块，条件是 if 0: 请问
> 这种语句块有机会被执行么?
> def setencoding():
> """Set the string encoding used by the Unicode implementation. The
> default is 'ascii', but if you're willing to experiment, you can
> change this."""
> encoding = "utf-8" # Default value set by _PyUnicode_Init()
> if 0:
> # Enable to support locale aware default string encodings.
> import locale
> loc = locale.getdefaultlocale()
> if loc[1]:
> encoding = loc[1]
> if 0:
> # Enable to switch off string to Unicode coercion and implicit
> # Unicode to string conversion.
> encoding = "undefined"
> if encoding != "ascii":
> # On Non-Unicode builds this will raise an AttributeError...
> sys.setdefaultencoding(encoding) # Needs Python Unicode build !
>
> -- 
>
> 开飞机的舒克
> http://www.lvye.org/shuke
> msn:weizhong at netease.com weizhong at netease.com>
> ------------------------------------------------------------------------
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese

-- 
HONG Yuan

大管家网上建材超市
http://www.homemaster.cn
Tel: 021-50941728
Fax: 021-50941727

在 06-2-13，Hong Yuan<hongyuan at homemaster.cn> 写道：
> if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> 整段代码注释掉要方便且清楚。
>

高！实在是高！

这表示这个地方现在没有做处理，但是可能现在的处理方式只是暂时的或者很可能变化的。
以后这里可以简单的修改来改变行为
有点标记的味道


On 2/14/06, 马踏飞燕 <honeyday.mj at gmail.com> wrote:
>
> 在 06-2-13，Hong Yuan<hongyuan at homemaster.cn> 写道：
> > if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> > 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> > 整段代码注释掉要方便且清楚。
> >
>
> 高！实在是高！
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
>
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On 2/14/06, 马踏飞燕 <honeyday.mj at gmail.com> wrote:
> 在 06-2-13，Hong Yuan<hongyuan at homemaster.cn> 写道：
> > if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> > 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> > 整段代码注释掉要方便且清楚。
> >
>
> 高！实在是高！
>
这跟 C/C++ 编程时用 #if 0 ... #endif 来取代 /* ... */ 一样，一般用于标记暂时的变化，小技巧而已。


--
 Best Regards
 Carlos

觉得还是没有""" """方便，要缩进

2006/2/14, Carlos Liu <about.linux at gmail.com>:
>
> On 2/14/06, 马踏飞燕 <honeyday.mj at gmail.com> wrote:
> > 在 06-2-13，Hong Yuan<hongyuan at homemaster.cn> 写道：
> > > if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> > > 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> > > 整段代码注释掉要方便且清楚。
> > >
> >
> > 高！实在是高！
> >
> 这跟 C/C++ 编程时用 #if 0 ... #endif 来取代 /* ... */ 一样，一般用于标记暂时的变化，小技巧而已。
>
>
> --
> Best Regards
> Carlos
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
>
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不过这是种hardcode的配置, 多了的话会很容易忘掉

不知道大家是怎么处理程序中的可配置部分的.
我的想法是一个单独的类来处理, 可以全局被调用, 用dict来存放配置项

On 2/13/06, Hong Yuan <hongyuan at homemaster.cn> wrote:
>
> if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> 整段代码注释掉要方便且清楚。
>
> 魏忠 wrote:
> > 在site模块发现下面的代码：里面有同个条件执行语句块，条件是 if 0: 请问
> > 这种语句块有机会被执行么?
> > def setencoding():
> > """Set the string encoding used by the Unicode implementation. The
> > default is 'ascii', but if you're willing to experiment, you can
> > change this."""
> > encoding = "utf-8" # Default value set by _PyUnicode_Init()
> > if 0:
> > # Enable to support locale aware default string encodings.
> > import locale
> > loc = locale.getdefaultlocale()
> > if loc[1]:
> > encoding = loc[1]
> > if 0:
> > # Enable to switch off string to Unicode coercion and implicit
> > # Unicode to string conversion.
> > encoding = "undefined"
> > if encoding != "ascii":
> > # On Non-Unicode builds this will raise an AttributeError...
> > sys.setdefaultencoding(encoding) # Needs Python Unicode build !
> >
> > --
> >
> > 开飞机的舒克
> > http://www.lvye.org/shuke
> > msn:weizhong at netease.com weizhong at netease.com>
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese at lists.python.cn
> > Subscribe: send subscribe to python-chinese-request at lists.python.cn
> > Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
> --
> HONG Yuan
>
> 大管家网上建材超市
> http://www.homemaster.cn
> Tel: 021-50941728
> Fax: 021-50941727
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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可不可以用strategy来做。这样可以实现很多不同的配置。而且很适合python这种动态语言。

On 2/22/06, Nickcheng <nick.maillist at gmail.com> wrote:
>
> 不过这是种hardcode的配置, 多了的话会很容易忘掉
>
> 不知道大家是怎么处理程序中的可配置部分的.
> 我的想法是一个单独的类来处理, 可以全局被调用, 用dict来存放配置项
>
> On 2/13/06, Hong Yuan < hongyuan at homemaster.cn> wrote:
> >
> > if 0: 里的语句不会被执行。它的作用主要是像配置文件中的注释一样，默认是一
> > 个配置，如果你觉得需要，可以把if 0改成if 1，这样就是另一种配置了。这比把
> > 整段代码注释掉要方便且清楚。
> >
> > 魏忠 wrote:
> > > 在site模块发现下面的代码：里面有同个条件执行语句块，条件是 if 0: 请问
> > > 这种语句块有机会被执行么?
> > > def setencoding():
> > > """Set the string encoding used by the Unicode implementation. The
> > > default is 'ascii', but if you're willing to experiment, you can
> > > change this."""
> > > encoding = "utf-8" # Default value set by _PyUnicode_Init()
> > > if 0:
> > > # Enable to support locale aware default string encodings.
> > > import locale
> > > loc = locale.getdefaultlocale()
> > > if loc[1]:
> > > encoding = loc[1]
> > > if 0:
> > > # Enable to switch off string to Unicode coercion and implicit
> > > # Unicode to string conversion.
> > > encoding = "undefined"
> > > if encoding != "ascii":
> > > # On Non-Unicode builds this will raise an AttributeError...
> > > sys.setdefaultencoding(encoding) # Needs Python Unicode build !
> > >
> > > --
> > >
> > > 开飞机的舒克
> > > http://www.lvye.org/shuke
> > > msn:weizhong at netease.com weizhong at netease.com>
> > >
> > ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > python-chinese
> > > Post: send python-chinese at lists.python.cn
> > > Subscribe: send subscribe to python-chinese-request at lists.python.cn
> > > Unsubscribe: send unsubscribe to
> > python-chinese-request at lists.python.cn
> > > Detail Info: http://python.cn/mailman/listinfo/python-chinese
> >
> > --
> > HONG Yuan
> >
> > 大管家网上建材超市
> > http://www.homemaster.cn
> > Tel: 021-50941728
> > Fax: 021-50941727
> >
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese at lists.python.cn
> > Subscribe: send subscribe to python-chinese-request at lists.python.cn
> > Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
> >
>
>
> _______________________________________________
> python-chinese
> Post: send python-chinese at lists.python.cn
> Subscribe: send subscribe to python-chinese-request at lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request at lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
>


--
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office phone:029-87607341
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